It is aftermarket part for .Mounting Rear to Top , Not Work with Solo Seats or Side Mount Seats.Knurled Cut for Easy install & Quick Release, No Tool Required to Install & Remove.Rubber washer and tab cover are designed to protect your chrome and lock the securley.Finish/Color: Black knurled , silver nutEasy to install, Instructions not included.Fitment:For all models rear mounting 1996-2019.For Sportster: Sportster1200, Sportster 883,Superlow, Iron 883, Forty Eight,1200 Custom, Superlow-1200T, Roadster, Seventy Two.For Touring: Road King, Road Glide, Road Glide Ultra, Street Glide, Street Glide special, Glide, Ultra Limited, Ultra Limited Low, Super Glide.For Softail: Softail Springer, Softail Slim, Fat Boy Fat Boys, Heritage Softail Classic, Softail Deluxe, Breakout.For Dyna: Street , Low rider, Low, Riders, Fat , Wide Glide.For CVO: Cvo Pro Street Breakout, Cvo Softail Deluxe, Cvo Road Glide, Cvo Limited, Cvo Street Glide.It Is Also Compatible For License Plate Holder With 6mm Mounting Holes Fixing And Decoration.Colour:blackMaterial:aluminumPackage Contents:1 x setOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.